Anvil for micrometer-gages and similar gages.



F. O. JAQUES, Sn.

ANVIL FOR MICROMETER GAGES AND SIMILAR GAGES.

. APPLICATION men APR. 10, 1916.

1,223,325. Patented Apr". 17, 1917.

Z 02 25 ram'wz' /www INVLENTUE? A? r 05mg,

m: NURRIs psrzns CO1.PHOYOJJTNOJVASNINGY'ON,D c.

UNITED STATES PATENT OFFICE.

, rEnNAnno-oscAnJAeUEs, sn., or GRANSTON, RHODE ISLAND.

AIN'VILIFQR MICBOMETER-GAGES ANDSIMILAR GAGES.

To all wkom itmay concern:

Be it known that I, FERNANDO OSCAR JAQUES, Sn, a citizen of the United States, residing at Cranston, in the county of Providence and State ofRhode Island, have invented a new and usefulyI'mprovement in Anvils for Micrometer-(Jr'ages and Similar Gages, of which thefollowing is a specification. I

In micrometer gages and the like, it is essential that. the end face of the spindle and the face ofthe anvil shall be in alinement, that is to say,- when the two faces are in juxtaposition every part of one face must be in actual contact with the corresponding part of the other face for accurate measurement. In the usual construction of these gages the end of the spindle is trued and faced and the coinciding end or face of the anvil is trued and. faced. The spindle is screw-threaded through the frame and the gages and similar gages, whereby the above undesirable features are wholly eliminated and a more accurate measuring instrument.

producedthan has heretofore been done.

A further object of my invention is to construct such an anvil so that the face of.

the anvil is self adjusting on contact with the face end ofthe spindle and then is rig-. idly secured in the adjusted accurateposition. I

Myinvention consists in the peculiar and novel construction of an anvil for micrometer gages and similar gages, said anvil having details of construction, as willbemore fully-set forth hereinafter and claimed.

Figure 1 isa side view of amicrometer gage provided withmy improved self adjusting anvil. f I

Fig. 2 is an enlarged detail view of the anvil end of the frame looking at the face of the anvil.

Fig. 3 is an enlargedlongitudinalsec- Specification of Letters Patent.

Patented Apr. 17, 1917.

Application filed April 10, 1916. Serial No. 90,123.

tional view'through the anvil and part of the frame, and

Fig. 4c is a view similar to Fig. 3 partly in section of a modified form of anvil.

In the drawing 5 indicates the U shape frame, 6 the barrel, 7 the thimble, 8 the spindle screw-threaded through the barrel 6 and having the end face 9; 10 a screwthreade'd hole through the end 11 of the frame 5 and 12 a set screw all of which is of the usual construction of a standard micrometer gage and is shown only to illustrate the use of my invention.

My improved self adjusting anvil 13 consists of a holding frame member 1 1 and an anvil face member 15. The holding member 14: has a screw slot 16 in its outer end, an enlarged inner head end 17 in the face of which is a saucer shaped cavity 18, a bore 19 extending centrally from the cavity 18 toward the end 14 and external screw-threads 20. p This member 14 screws into the screwthreaded hole 10 in the end 11 of the frame and takes the place of the-usual solid one piece anvil.

The anvil face member has a round head 21 corresponding. in size to the end of member 15 is rigidly secured in the adjusted position to the holding member 14: by a fusible metal 26, intermediate the two memhers 14 and 15 in the bore 19 as shown in Fig.3.

In the modified form as shown in Fig. 4

1 the bore 19 and stem 24: are eliminated and the fusible metal 26 is placed between the head end 17 of the holding member 14: and the head 21 of the anvil member 15 in the cavity 18. I

The fusible metal 26, which may be any metal, which melts at a comparatively low temperature, such as solder melts at a low temperature, preferably two hundred degrees of heat. The end 11 of the frame is subjected to this temperature, preferably by immersing the same in boiling hot water and when the fusible metal fuses or melts the face end 9 of thespindle and the face 22 of the anvil are brought together, eithenby turning the spindle or anvil, and the anvil member 15 being now movable, the face 22 of the anvil automatically adjusts itself to the face 9 of the end of the spindle 8. The two faces are noW absolutely accurate relative to each other and when the, fusible metal cools and sets the anvil member 15 is rigidly secured in the adjusted position. If through Wear or other causes the faces should at any time become out of true, the above operations may be repeated and the faces again trucd relative to each other.

I do not wish to confine myself to the construction shown as the same could be varied within the scope of the appended claims.

Having thus described my invention I claim as new.

1. An anvil for micrometer gages and similar gages comprising a frame member having a saucer shaped cavity in one end, an anvil face member having a convex inverted saucer shaped back in the frame member cavity, and a fusible metal intermediate the frame member and the anvil face member, said fusible metal. securing the anvil face member to the frame member.

2. An anvil for micrometer gages and similar gages comprising a frame member having a saucer shaped cavity in one end, an anvil face member having a flat face and an inverted saucer shaped back in the frame member cavity, and a fusible metal intermediate the frame member and the anvil face member, said fusible metal securing the anvil face member to the frame member.

3. An anvil for micrometer gages and similar gages comprising an externally screw-threaded frame member having a saucer shaped cavity in one end and a bore extending in from the cavity, an anvil face member having a flat anvil face, an inverted saucer shaped back in the frame member cavity and a stem in the bore of the frame member and a fusible metal intermediate the frame member and the anvil face member, said fusible metal securing the anvil face member to the frame member.

In testimony whereof, I have signed my name to this specification.

FERNANDO OSCAR JAQUES, SR.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents. Washington, D. G. 

